What this is REALLY all about is several big money supporters of Rick Perry and David Dewhurst who benefit greatly from the current illegal immigration situation and want things pretty much left alone are behind Dewhurst. Those of us who actually want the problem fixed are supporting Ted Cruz.
That's the nub of it in a nutshell.
Big money supports are in the race for sure. Note this from one of the articles I linked above:
snip......
Dewhurst is the clear choice among registered lobbyists in Texas, drawing 26 times more money from them than Cruz, according to a recent analysis of campaign finance data by the Houston Chronicle. Lobbyists in Washington, D.C., are donating to the race on a smaller scale but favor Cruz, according to the same analysis.
Dewhurst attracted $189,869 from 85 registered lobbyists in Texas, while just four Texas lobbyists gave a combined $11,750 to Cruz, according to the report. Federal lobbyists and their families have donated $120,148 to Cruz. Dewhurst has drawn less than $25,000 from that sector.
end snip